I am sleeping my sister in-law and we have been at it for 8 years . The sex is unbelievable way better than my wife but maybe it is because it is an affair .I love the fact she is open to anything either one of use can think of sexually. i have bent her over at thanksgiving we could hear the whole family including my wife she was game. I do not feel guilty over this but i am wondering how long i can play with fire and not get burnt?